One person is dead and another is missing and presumed drowned following a Saturday night boating accident at Lake Havasu on the Arizona-California border.

The Mohave County Sheriff’s Office received multiple calls about 8 p.m. that a boat had flipped and its occupants were tossed into the water, spokeswoman Trish Carter said.

Carter said another boat plucked some of the boaters from the water, including an unresponsive male who was transported to shore. Bruce Buchanan, 50, of Redondo Beach, California, was pronounced dead after CPR failed. The cause and manner of his death had not been determined Monday afternoon.

Carter said authorities continue looking for a woman who is missing, aided by sonar and divers.

Multiple witnesses told deputies that the 35-foot Nordic twin-engine boat was traveling north in the South Basin when it turned hard to the left, flipped and ejected all occupants. Carter said alcohol is a suspected factor in the accident.

Review-Journal writer Bianca Cseke contributed to this report. Contact her at bcseke@reviewjournal.com or 702-383-0381. Follow @biancacseke1 on Twitter.

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